There is a great attraction between twins. Twins are meant to be united, although they are not always as united as one might expect them to be. If twins are twins in the real sense of the word, that is if two twin souls have started on the journey together and have managed to come to the earth together, they are the most united. There have been twins who were so united than when one fell ill the other would fall ill too; if one was happy the other would be happy even though they might be separated. But there can also be twins who are like two people out in the rain who happen to find shelter in the same place; and that is another matter.